摘要
Abstract
Six stages of database system design were introduced which includes requirements analysis stage, concept and structure design stage, logic structure design stage, physical structure design stage, implementation stage, and stage of operation and maintenance. Then current research situation of database system was described by examples of distributed database system, knowledge base system and active database system. Finally, current research focus and development trend were pointed out combining with introduction of data warehouse, engineering database, statistical database, space database, etc.关键词
数据库；分布式数据库；知识库；主动数据库；数据仓库；特种数据库Key words
database/ distributed database/ knowledge base/ active database/ data warehouse/ special database分类
信息技术与安全科学
